SU60531A1 - Electromagnetic Separator - Google Patents

Description

In the existing vacuum separators, the separated material is fed and carried out by a special transport device. There are, however, deflecting-type magnetic separators in which materials are separated with a free fall in a vertical interstitial space under the action of a bipolar electromagnetic system on them.

The advantage of this system is, in particular, that in the separation process the magnetic force acting on seipHa does not counteract any other forces and it performs only its direct function — the deviation of the trajectories of the more magnetic grains from the trajectories of the less magnetic grains. Due to this, the separation of any ore into such cenapaTOipax requires a considerably less intensive field, and a much less magnetic field on them can separate much less magnetic ores than on other known separators.

In some cases, it would be preferable to have such a distribution of the force field in which (the magnitude of the magnetic force even decreased in the direction of its action.

According to the invention, such a creation is constant in magnitude or decreasing {1c in the direction of its action by the magnetic field in the working area, in order to separate out very weakly magnetic materials with their free fall in the vertical 1 interstitial space of the bipolar electromagnetic system, because convex poles The latter are located at axes of symmetry at an obtuse angle. An iron wedge with flat edges is installed between the poles.

To increase the capacity of the separator arranged in this way, it can be made multi-chamber, for which the poles of several electromagnetic systems are located at the vertices of a regular polygon and are connected in series to form a single electromagnetic system.

FIG. 1 shows a schematic sectional view of the separator's working chamber with a plane parallel to its base on the fng. 2 - scheme of multi-chamber separator.

The electromagnetic separator system forms a vertical working chamber bounded by convex pole tips 1 and 2 and an iron wedge 3 with flat edges. The cores 4 of the electromagnet, terminated by tips / and 2, are equipped with magnetizing coils 5. The working chamber is limited to a cylindrical

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wall 7 and provided with a dividing partition 6 adjacent to the iron wedge 3. The axis of symmetry of the tips / and 2 are located at an obtuse angle to each other. The shape of the wedge 3 is also obtuse.

Separated material flows through the feeder (not shown in the figures) into the magnetic field zone between the dividing partition 6 and wall 7 of the working chamber. In the magnetic field of the working zone, a force acts on the grain, which is directed from the wedge to the pole tips / k 2 along the radii emanating from the edge of the wedge. The more magnetic grains during free fall through the working chamber are deflected beyond the partitioning wall 6 and are collected separately from less magnetic grains.

To ensure a constant magnitude of the magnetic force in the entire working space, it is necessary that the angle between the edge of the wedge be equal to 120 ° n the configuration of the polar tips has a definite geometric shape determined by theoretical calculation. With an angle between the wedge face less than 120 ° and the corresponding configuration of pole pieces, the magnitude of the magnetic force will even decrease in the direction of the force, which may in some cases be more preferable than the constant magnitude of the magnetic force.

It is advisable that the angle between

4gran mi "lina ravi ls -; -, where n-

integer. In this case, it is possible to implement very compact multi-chamber separators with n electromagnetic systems, located in the vertices of a regular polygon and connected in series, as schematically represented in FIG.

4tg

2 for the case - 120 ° (for a hexagon).

Prev Invention

}. Electromagnetic separator, in which the separation of materials about. when they free fall in the vertical interstitial space of a bipolar electro magnetic system, it is also distinguished by the fact that, in order to separate out very weakly magnetic materials by creating in the working area a magnetic force constant or decreasing in the direction of its action, magnetic poles The electromagnetic system is arranged so that their symmetry axes form an obtuse angle, and an iron wedge with flat edges is installed between the poles.

2. The form of the separator according to claim 1, characterized in that, in order to increase the separator's performance by making it multi-chamber, the poles of several electromagnetic systems are located in the vertices of a regular polygon and are connected in series to form a single electromagnetic system,

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: J

FIG. one.

FIG. 2